Cheapest return flights from London to Porto in September from $101

AirHint found the following cheapest return flights from London (STN) to Porto (OPO) in September 2026 (see full year).

Return flights

27 Sep - 14 Oct Ryanair direct
28 Sep - 14 Oct Ryanair direct
27 Sep - 16 Oct Ryanair direct
28 Sep - 16 Oct Ryanair direct
27 Sep - 17 Oct Ryanair direct
28 Sep - 17 Oct Ryanair direct
27 Sep - 13 Oct Ryanair direct
28 Sep - 13 Oct Ryanair direct
27 Sep - 09 Oct Ryanair direct
28 Sep - 09 Oct Ryanair direct
20 Sep - 23 Sep Ryanair direct
02 Sep - 23 Sep Ryanair direct
01 Sep - 24 Sep Ryanair direct
03 Sep - 23 Sep Ryanair direct
15 Sep - 23 Sep Ryanair direct
07 Sep - 23 Sep Ryanair direct
01 Sep - 11 Sep Ryanair direct
01 Sep - 16 Sep Ryanair direct
13 Sep - 23 Sep Ryanair direct
23 Sep - 23 Sep Ryanair direct

Also check the deals for one-way flights from London to Porto in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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